leds: leds-lt3593: Fix checkpatch warnings

Fixes the following type of checkpatch warnings:
WARNING: Prefer netdev_info(netdev, ... then dev_info(dev, ...
then pr_info(...  to printk(KERN_INFO ...
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Bryan Wu <cooloney@gmail.com>

drivers/leds/leds-lt3593.c

@@ -89,7 +89,7 @@ static int __devinit create_lt3593_led(const struct gpio_led *template,
 
 	/* skip leds on GPIOs that aren't available */
 	if (!gpio_is_valid(template->gpio)) {
-		printk(KERN_INFO "%s: skipping unavailable LT3593 LED at gpio %d (%s)\n",
+		dev_info(parent, "%s: skipping unavailable LT3593 LED at gpio %d (%s)\n",
 				KBUILD_MODNAME, template->gpio, template->name);
 		return 0;
 	}
@@ -117,7 +117,7 @@ static int __devinit create_lt3593_led(const struct gpio_led *template,
 	if (ret < 0)
 		return ret;
 
-	printk(KERN_INFO "%s: registered LT3593 LED '%s' at GPIO %d\n",
+	dev_info(parent, "%s: registered LT3593 LED '%s' at GPIO %d\n",
 		KBUILD_MODNAME, template->name, template->gpio);
 
 	return 0;